<div class="devui-scroll-container">
  <ul class="devui-scroll-content">
    <li class="item" *ngFor="let item of list; let index = index">
      {{ index + 1 + '. ' + item }}
    </li>
  </ul>
  <d-back-top [scrollTarget]="scrollElement" [right]="'30px'" [bottom]="'10px'" (backTopEvent)="backTop($event)"></d-back-top>
</div>
